[tut][hard] overclocking the atmega adc

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sorry if this doesnt quite fit here
but ive gathered a lot of useful information
from this forum in the past
and thought it would be good to return the favor

i recently did a write up on the bit depth tradeoff
for overclocking the atmega adc
and an analysis of the adc input stage

the full report can be found here
http://www.openmusiclabs.com/lea...

id be curious to hear
if there is other data out there on this topic
and how my results compare

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Awesome tutorial and very informative.

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I did some test a while back to see how good the ADC was, I had an other purposes, I wanted to see if I could under sample 450KHz 2.IF.
I had a 16MHz mega16. where I made a ASM program with 1K RAM of buffer , and then send it "slow" back to the PC, a kind of storage scope, I used a sine wave as signal.
1. I had no problems with full speed, so my guess is that your problem is that your program is to slow to handle full speed.
2. other that high freq signals was about 3-6 db down I would say that I still had about 7-8 bit on a 4 and 8 MHz ADC clk.(with a 450KHz sine wave as input)